Worksheet: Set of Natural Numbers

In this worksheet, we will practice checking if a number, or a set of numbers, belongs to, is included in, or is not included in the set of natural numbers.

Q1:

The set of natural numbers is .

  • A infinite
  • B finite

Q2:

Decide whether the answer to the following question belongs to : How many cities are there in your country?

  • Abelongs to
  • Bdoes not belong to

Q3:

Decide whether the answer to the following question belongs to : How many pages are there in a book?

  • Abelongs to
  • Bdoes not belong to

Q4:

Is 7 2 6 1 7 a natural number?

  • A no
  • B yes

Q5:

Decide whether the answer to the following question belongs to : How many people are there in your family?

  • Abelongs to
  • Bdoes not belong to

Q6:

Decide whether the answer to the following question belongs to : What is your father’s height in metres?

  • Adoes not belong to
  • Bbelongs to

Q7:

Find the set of numbers that belong in { 4 , 9 , 5 , 7 } .

  • A
  • B
  • C { 5 , 7 , 9 }
  • D { 4 , 5 , 7 , 9 }
  • E { 4 }

Q8:

Which of the following is true?

  • A 3 9
  • B 3 9

Q9:

Which of the following is true?

  • A { 8 }
  • B { 8 }
  • C { 8 }

Q10:

Is 1 8 , 0 4 5 or ?

  • A
  • B

Q11:

Is { 9 , 2 5 3 } , , or ?

  • A
  • B

Q12:

State the elements in 𝑀 given 𝑀 = { 𝑎 𝑎 , 𝑎 > 7 } .

  • A 𝑀 = { 0 , 1 , 2 , 3 , 4 , 5 , 6 }
  • B 𝑀 = { 7 , 8 , 9 , }
  • C 𝑀 = { 8 , 9 , 1 0 }
  • D 𝑀 = { 8 , 9 , 1 0 , }
  • E 𝑀 = { 9 , 1 1 , 1 3 , }

Q13:

Is ( 8 2 , 9 3 2 8 9 , 2 0 4 ) or ?

  • A
  • B

Q14:

Is ( 4 . 7 × 2 4 . 3 ) or ?

  • A
  • B

Q15:

Is 3 9 2 or ?

  • A
  • B

Q16:

Is 1 8 2 9 or ?

  • A
  • B

Q17:

Find the set of natural numbers that are greater than or equal to 10.

  • A { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 1 0 }
  • B { 1 1 , 1 2 , 1 3 , }
  • C { 1 0 , 1 1 , 1 2 }
  • D { 1 0 , 1 1 , 1 2 , }
  • E { 1 1 , 1 3 , 1 5 , }

Q18:

Find the set of counting numbers that are between 4 and 7.

  • A
  • B
  • C
  • D
  • E

Q19:

Which of the following completes this relation: 𝕆 𝔼 = ?

  • A
  • B 𝔼 ( e v e n n u m b e r s )
  • C ( n a t u r a l n u m b e r s )
  • D 𝕆 ( o d d n u m b e r s )

Q20:

Find the set of natural numbers between 2 1 7 and 4 0 5 .

  • A { 3 , 8 }
  • B
  • C { 7 , 5 , 3 , 8 }
  • D { 4 , 5 , 6 , 7 }

Q21:

Which of the following is a natural number: 9.6, 8,870, 9 8 , 7 1 2 ?

Q22:

Is ( 6 × 2 0 ) ÷ 2 or ?

  • A
  • B

Q23:

Does your weight in kilograms belong to ?

  • Ano
  • Byes

Q24:

The price of one kilogram of mangoes is 34 LE. Does the price of 1 3 4 kg belong to the set of natural numbers?

  • ANo
  • BYes

Q25:

List the set of natural numbers that are between 1 4 7 and 3 0 5 .

  • A { 2 , 3 , 4 }
  • B { 2 , 3 , 4 , 5 }
  • C { 2 , 3 , 4 , 5 , 6 }
  • D { 3 , 4 , 5 }

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